import { describe, expect, it, vi } from "vitest";

import { defineToolcraft } from "../schema/define-toolcraft";
import {
  getLegacyToolcraftSectionCollapseEntryKey,
  getLegacyToolcraftSectionCollapseStorageKey,
  readLegacyToolcraftSectionCollapse,
} from "./persistence-legacy-section-collapse";

function createSchema() {
  return defineToolcraft({
    canvas: { enabled: true },
    panels: {
      controls: {
        sections: [
          {
            controls: {
              opacity: {
                defaultValue: 75,
                target: "appearance.opacity",
                type: "slider",
              },
            },
            id: "appearance",
            title: "Appearance",
          },
        ],
        title: "Controls",
      },
    },
  });
}

describe("legacy controls section collapse persistence", () => {
  it("reads the old key once and maps only known entries to stable section ids", () => {
    const schema = createSchema();
    const sections = schema.panels.controls?.sections ?? [];
    const sectionIndex = sections.findIndex((section) => section.id === "appearance");
    const section = sections[sectionIndex];
    const storageKey = getLegacyToolcraftSectionCollapseStorageKey(schema);
    const entryKey = getLegacyToolcraftSectionCollapseEntryKey(
      section!,
      sectionIndex,
    );
    const getItem = vi.fn((key: string) =>
      key === storageKey
        ? JSON.stringify({
            collapsed: [entryKey, "unknown:4:target", 12],
            version: 1,
          })
        : null,
    );
    const setItem = vi.fn();

    expect(
      readLegacyToolcraftSectionCollapse(schema, { getItem, setItem }),
    ).toEqual({
      controls: {
        collapsedSections: { appearance: true },
      },
    });
    expect(getItem).toHaveBeenCalledTimes(1);
    expect(setItem).not.toHaveBeenCalled();
  });

  it("ignores invalid payloads without writing", () => {
    const schema = createSchema();
    const getItem = vi.fn(() => JSON.stringify({ collapsed: "appearance", version: 1 }));
    const setItem = vi.fn();

    expect(readLegacyToolcraftSectionCollapse(schema, { getItem, setItem })).toBeUndefined();
    expect(getItem).toHaveBeenCalledTimes(1);
    expect(setItem).not.toHaveBeenCalled();
  });
});